Sökning: "Mats Söder"

Hittade 4 avhandlingar innehållade orden Mats Söder.

  1. 1. Growth and Removal of Inclusions During Ladle Stirring

    Författare :Mats Söder; KTH; []
    Nyckelord :inclusions; ladle; gas-stirring; induction-stirring; secondary refining; bubble flotation;

    Sammanfattning : The growth and removal of inclusions in stirred ladles hasbeen studied. First, the importance of different growthmechanisms suggested in the literature were studied. Simulationresults from a fundamental model of an induction-stirred ladlehave been used as input in the calculations. LÄS MER

  3. 2. Growth and removal of inclusions during ladle refining

    Författare :Mats Söder; Pär Jönsson; Hae-Geon Lee; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Meteorology; inclusions; steel; ladle; cluster growth; modelling; Meteorologi; Meteorology; Meteorologi;

    Sammanfattning : The overall purpose of this thesis work has been to further our understanding of the growth and removal of inclusions in gas- and induction-stirred ladles. The primary focus has been on alumina inclusions.Growth mechanisms were studied using data from fundamental mathematical models of gas- and induction-stirred ladles. LÄS MER

  4. 3. Late Weichselian and early Holocene changes of vegetation, climate and sea level on the Skagi peninsula, northern Iceland

    Författare :Mats Rundgren; Kvartärgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; asthenosphere viscosity; glacial loading unloading; marine polar front migrations; sea-level change; climate change; vegetation change; Early Holocene; Late Weichselian; Iceland; Lake sediments; Skagi peninsula; Geology; physical geography; Geologi; fysisk geografi;

    Sammanfattning : Sediment sequences from five lakes on the Skagi peninsula, northern Iceland, were subjected to mineral magnetic analysis, carbon analysis, pollen analysis, plant macrofossil analysis, diatom analysis, radiocarbon dating and tephra analysis in order to make detailed reconstructions of vegetation, climate and sea level during the Late Weichselian and Early Holocene. The main purpose was to investigate if the dramatic deglacial climatic shifts recorded in proxy records from the North Atlantic region, such as ice cores, marine sediments and lake sediments, also are registered in Skagi lake sediments, which would be expected considering Iceland´s position in the middle of the North Atlantic Ocean, within the range of the Late Weichselian–Early Holocene migrations of the marine polar front. LÄS MER

  5. 4. Den verkliga staden? : Norrköpings innerstad mellan urbana idéer och lokala identiteter

    Författare :Mats Brusman; Tora Friberg; Lars Kvarnström; Ola Wetterberg; Linköpings universitet; []
    Nyckelord :Town planning; place; transport; mindscapes; local identity; Stadsplanering; trafik; plats; mobilitet; mindscapes; lokal identitet; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP;

    Sammanfattning : This dissertation studies how city planning is affected by notions on urbanity and ideas of the value of local places. Empirically, the dissertation deals with the development of the city of Norrköping in the 1990’s and the early 2000’s. LÄS MER